CO2freeSNG2.0 - Advanced Substitute Natural Gas from Coal with Internal Sequestration of CO2 (CO2freeSNG2.0)
Third Party Funds Group - Sub project
Acronym: CO2freeSNG2.0
Start date : 01.07.2013
End date : 30.06.2016
Website: https://www.evt.tf.fau.de/forschung/forschungsschwerpunkte/2nd-generation-fuels/co2freesng2-0/
Overall project details
Overall project
Advanced Substitute Natural Gas from Coal with Internal Sequestration of CO2
Project details
Short description
Short description
The proposed project shall continue a previous RFCS project (i.e. CO2freeSNG) which focused on the conversion of coal into Substitute Natural Gas (SNG) by means of methanation of coal derived syngas in the 50 – 500 MW range.
The main advantages of such Coal-to-SNG systems are their unique abilities for backing up the increasing share of fluctuating renewable energies (i.e. wind, pv) in the European electricity grid. Storing continuously energy from coal as Substitute Natural Gas (SNG) in the existing gas grid infrastructure in order to provide this energy on demand to flexible gas turbines and highly efficient combined cycles combines ideally with wind and photovoltaics.
The state-of-the-art for Coal-to-SNG systems comprises large scale systems with entrained flow or oxygen-blown gasifiers including an extensive cleaning of the syngas. Cold gas cleaning by means of the Rectisol process implies scrubbing of the syngas at -40ºC to -70ºC with significant efficiency losses and an extraordinary high technical effort. However, grid injection requires usually medium-scale systems in order to use existing grid infrastructure due to usually locally limited gas injection capacities. The CO2freeSNG2.0 project targets at an innovative and medium-scale coal-to-SNG system with a substantially simplified gas cleaning at elevated temperatures.
Scientific Abstract
The proposed project shall continue a previous RFCS project (i.e. CO2freeSNG) which focused on the conversion of coal into Substitute Natural Gas (SNG) by means of methanation of coal derived syngas in the 50 – 500 MW range.
The main advantages of such Coal-to-SNG systems are their unique abilities for backing up the increasing share of fluctuating renewable energies (i.e. wind, pv) in the European electricity grid. Storing continuously energy from coal as Substitute Natural Gas (SNG) in the existing gas grid infrastructure in order to provide this energy on demand to flexible gas turbines and highly efficient combined cycles combines ideally with wind and photovoltaics.
The state-of-the-art for Coal-to-SNG systems comprises large scale systems with entrained flow or oxygen-blown gasifiers including an extensive cleaning of the syngas. Cold gas cleaning by means of the Rectisol process implies scrubbing of the syngas at -40ºC to -70ºC with significant efficiency losses and an extraordinary high technical effort. However, grid injection requires usually medium-scale systems in order to use existing grid infrastructure due to usually locally limited gas injection capacities. The CO2freeSNG2.0 project targets at an innovative and medium-scale coal-to-SNG system with a substantially simplified gas cleaning at elevated temperatures.
